A device for preventing foreign matter from entering a dredging head of a trailing suction hopper dredger

Abstract

The utility model belongs to the field of dredging construction equipment, and concretely is a kind of rake suction dredger rake head anti-fouling device, including cover body, the top of cover body is equipped with booster pump, the inside one side of cover body is fixedly connected with grating, and the inside of cover body is provided with filter assembly;Through two groups of baffle rod are matched with grating and carry out double filtration to sundries, effectively promote the effect of anti-fouling, and when grating needs cleaning, water source in water body is absorbed by booster pump at any time, then is sprayed by flushing frame after pressure boosting, impact on grating and paddle is realized, paddle is driven to reciprocatingly clean grating outside as power source, and the cleaning water sprayed by drainage plate can realize effective cleaning of grating, simultaneously, the baffle rod that is opened also facilitates the discharge of sundries, improves the cleaning effect of grating, avoids the trouble of manually frequently disassembling, replacing and cleaning grating, and then reduces the labor burden.

Description

Technical Field

[0001] This utility model relates to the field of dredging construction equipment, specifically a debris prevention device for the dredging head of a trailing suction hopper dredger. Background Technology

[0002] A trailing suction hopper dredger is a large, self-propelled, hopper-type dredger equipped with a trailing hopper and a hydraulic suction system. During dredging, the trailing suction pipe is lowered to the riverbed, and the vacuum effect of the mud pump draws mud from the riverbed through the trailing hopper and suction pipe into the dredger's hopper. Once the hopper is full, the dredger raises its hopper and sails to the dumping area to unload the mud, or the dredged mud is directly discharged overboard.

[0003] A search revealed a Chinese patent (authorization announcement number CN222716073U) disclosing a debris-prevention device for a trailing suction hopper dredging head. This patented technology includes a fixed cover and a movable cover, with the movable cover located at the front of the fixed cover. This invention utilizes a grid plate, an upper stop bar, and a lower stop bar, which are spatially staggered. This allows for initial interception of debris in the silt when the trailing suction hopper dredging head pumps silt from the bottom of the water. A second interception is then achieved through the grid plate located behind the upper and lower stop bars. This dual-interception design enhances the device's debris-prevention effect. The detachable grid plate facilitates regular cleaning and easy replacement when damaged. The detachable rake teeth allow for easy replacement when damaged, extending the device's lifespan.

[0004] Although the dredging rake head in this technology can work with the screen to intercept impurities in the silt, the workers need to raise the rake head and manually disassemble it when cleaning the screen. This process is time-consuming. In addition, because there are many impurities in the silt, workers need to frequently disassemble, replace and clean the rake head, which greatly increases the workload of the workers and the downtime of the rake head, and reduces the continuity and efficiency of dredging operations.

[0005] Therefore, a debris-proof device for the dredging head of a trailing suction hopper dredger is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a debris prevention device for the dredging head of a suction dredger.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The dredging head anti-debris device of the dredging vessel of this utility model includes a cover, a booster pump installed on the top of the cover, a grid fixedly connected to one side of the inside of the cover, a filter assembly provided inside the cover, the filter assembly including a baffle, a rotating shaft symmetrically rotatably connected to the inside of the cover away from the grid, baffles fixedly connected at equal intervals to the inner sides of the two rotating shafts, a flushing frame symmetrically fixedly connected to the inside of the cover near the grid, and a brush plate that cooperates with the grid slidably connected to the inside of the cover away from the flushing frame.

[0008] Preferably, one end of each of the two rotating shafts extends to the outside of the cover and is fixedly connected to a rotating plate. The inner side of each of the two rotating plates is provided with a sliding groove. An electric push rod is symmetrically fixedly connected to the outer side of the cover via a mounting block. The output end of each of the two electric push rods is fixedly connected to a sliding shaft. The two sliding shafts are slidably connected to the inside of the corresponding rotating plate via sliding grooves.

[0009] Preferably, a reciprocating screw is rotatably connected to one side of the inner side of the cover, the brush plate is connected to the outside of the reciprocating screw through a screw-nut pair, one end of the reciprocating screw extends to the top of the cover and is fixedly connected to a worm gear, a worm is rotatably connected to one side of the top of the cover through a limiting bracket, and blades are symmetrically fixedly connected to the outside of the worm, and the worm gear and the worm are coupled together.

[0010] Preferably, a drainage plate that cooperates with the blade is fixedly connected to one side of the booster pump, and water pipes are fixedly connected to both sides of the drainage plate. One end of each water pipe extends into the interior of the cover and is fixedly connected to the corresponding flushing frame.

[0011] Preferably, the two sets of baffles are staggered, and the inner sides of the two flushing frames are fixedly connected with pressurized nozzles at equal intervals.

[0012] Preferably, a movable cover is installed on the outer side of the cover body, a rake tooth is fixedly connected to the bottom of the movable cover, and a connecting pipe is fixedly connected to the outer side of the cover body away from the movable cover.

[0013] Preferably, a plurality of fixing bolts are equidistantly installed on the top of the movable cover, and one end of the plurality of fixing bolts extends through the movable cover into the interior of the rake teeth and is threadedly connected thereto.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses two sets of baffles in conjunction with the screen to perform dual filtration of debris, effectively improving the debris prevention effect. When the screen needs cleaning, a booster pump continuously draws water from the water body, pressurizes it, and sprays it out through the flushing frame to impact the screen and the blades. The blades, as the power source, drive the brush plate to reciprocate to clean the outside of the screen. Combined with the cleaning water sprayed by the drainage plate, the screen can be effectively cleaned. At the same time, the open baffles facilitate the discharge of debris, improving the cleaning effect of the screen and avoiding the trouble of frequent manual disassembly, replacement, and cleaning of the screen, thereby reducing the burden of manual labor and greatly reducing downtime caused by screen cleaning, thus improving the continuity and efficiency of dredging operations.

[0016] 2. This utility model allows for convenient and quick disassembly and replacement of the rake teeth through the setting of multiple fixing bolts, thereby enabling the replacement of rake tooth models that are suitable for different underwater environments, thus improving the flexibility and adaptability of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a first sectional view of the present invention;

[0021] Figure 4 This is a second sectional view of the present invention;

[0022] Figure 5 For the present utility model Figure 3 Enlarged view of point A in the middle;

[0023] Figure 6 This is a perspective view of the rake teeth in this utility model.

[0024] In the diagram: 1. Cover; 2. Rotating shaft; 3. Baffle; 4. Grille; 5. Flushing frame; 6. Brush plate; 7. Rotating plate; 8. Electric push rod; 9. Sliding shaft; 10. Reciprocating screw; 11. Worm gear; 12. Worm; 13. Paddle; 14. Booster pump; 15. Drainage plate; 16. Water pipe; 17. Movable cover; 18. Rake teeth; 19. Connecting pipe; 20. Fixing bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1-5 As shown, a debris-prevention device for a dredging head of a trailing suction hopper includes a cover 1. A booster pump 14 is installed on the top of the cover 1. A grid 4 is fixedly connected to one side of the inside of the cover 1. A filter assembly is installed inside the cover 1, including baffles 3. Rotating shafts 2 are symmetrically rotatably connected to the inside of the cover 1 away from the grid 4. Baffles 3 are fixedly connected at equal intervals to the inner sides of the two rotating shafts 2. A flushing frame 5 is symmetrically fixedly connected to the inside of the cover 1 near the grid 4. A brush plate 6 that cooperates with the grid 4 is slidably connected to the inside of the cover 1 away from the flushing frame 5. Rotating plates 7 are fixedly connected to one end of each of the two rotating shafts 2 extending to the outside of the cover 1. Sliding grooves are opened on the inner sides of the two rotating plates 7. Electric push rods 8 are symmetrically fixedly connected to the outside of the cover 1 via mounting blocks. The output end of the push rod 8 is fixedly connected to a sliding shaft 9. The two sliding shafts 9 are slidably connected to the interior of the corresponding rotating plate 7 through a sliding groove. A reciprocating screw 10 is rotatably connected to one side of the inside of the cover 1. The brush plate 6 is connected to the outside of the reciprocating screw 10 through a screw nut pair. One end of the reciprocating screw 10 extends to the top of the cover 1 and is fixedly connected to a worm gear 11. A worm 12 is rotatably connected to one side of the top of the cover 1 through a limit frame. Blades 13 are symmetrically fixedly connected to the outside of the worm 12. The worm gear 11 and the worm 12 are coupled together. A drainage plate 15 that cooperates with the blade 13 is fixedly connected to one side of the outside of the booster pump 14. Water pipes 16 are fixedly connected to both sides of the outside of the drainage plate 15. One end of each water pipe 16 extends into the inside of the cover 1 and is fixedly connected to the corresponding flushing frame 5.

[0028] During operation, the two sets of baffles 3 can block debris, preventing it from entering. The inner grille 4 provides secondary filtration, enhancing the filtration effect. When cleaning the grille 4 is required, the booster pump 14 is activated to draw water, which is then pressurized and sprayed out through the drain plate 15 and the flushing frame 5. The flushing frame 5 sprays the pressurized water onto the grille 4, flushing it. Simultaneously, the pressurized water sprayed from the drain plate 15 impacts the paddle 13, causing it and the worm gear 12 to rotate. The worm gear 12 then drives the worm wheel 11 and the reciprocating screw 10 to rotate, causing the reciprocating screw 10 to drive the brush plate 6 in a reciprocating motion via the screw nut pair. This allows the brush plate 6 to repeatedly clean the outer side of the grille 4, working in conjunction with the drain plate 15. The sprayed cleaning water effectively cleans the screen 4. Simultaneously, two electric push rods 8 are activated, which pull the rotating plate 7 to rotate via the sliding shaft 9. The rotating plate 7 then drives the rotating shaft 2 and the corresponding baffle 3 to rotate, thereby causing the two sets of baffles 3 to open outward. This not only pushes outward the debris blocked outside the baffles 3 with the impact force of the water sprayed from the flushing frame 5, but also facilitates the flushing of debris that falls off the screen 4, improving the cleaning effect of the screen 4. This avoids the trouble of frequently disassembling, replacing, and cleaning the screen 4 manually, thus reducing the burden of manual labor and greatly reducing downtime caused by cleaning the screen 4. This improves the continuity and efficiency of dredging operations. After cleaning, the booster pump 14 is turned off and the output end of the electric push rod 8 is controlled to push the baffle 3 back to its original position.

[0029] This device uses two sets of baffles 3 in conjunction with the screen 4 to perform dual filtration of debris, effectively improving the debris prevention effect. When the screen 4 needs cleaning, the booster pump 14 draws water from the water body at any time, pressurizes it, and sprays it out through the flushing frame 5 to impact the screen 4 and the blades 13. The blades 13 act as a power source to drive the brush plate 6 to reciprocate to clean the outside of the screen 4. Combined with the cleaning water sprayed by the drainage plate 15, the screen 4 can be effectively cleaned. At the same time, the open baffles 3 facilitate the discharge of debris, improve the cleaning effect of the screen 4, avoid the trouble of frequently disassembling, replacing and cleaning the screen 4 manually, thereby reducing the burden of manual labor and greatly reducing the downtime caused by cleaning the screen 4, improving the continuity and efficiency of dredging operations.

[0030] Among them, two sets of baffles 3 are staggered, and pressurized nozzles are fixedly connected at equal intervals on the inner side of the two flushing frames 5. A movable cover 17 is installed on the outer side of the cover 1. Rake teeth 18 are fixedly connected to the bottom of the movable cover 17. A connecting pipe 19 is fixedly connected to the outer side of the cover 1 away from the movable cover 17.

[0031] Through the above technical solution, the booster pump 14 can accurately flush the pressurized water onto the grid 4, and the connecting pipe 19 can be connected to an external suction pipe to facilitate the suction of sludge.

[0032] Example 2

[0033] Please see Figure 6 As shown in the first embodiment, as another implementation of this utility model, a plurality of fixing bolts 20 are equidistantly installed on the top of the movable cover 17. One end of the plurality of fixing bolts 20 extends through the movable cover 17 into the interior of the rake teeth 18 and is threadedly connected thereto.

[0034] During operation, the rake teeth 18 can be easily disassembled and replaced using multiple fixing bolts 20, allowing for the replacement of different rake tooth 18 models to suit different underwater environments, thus improving the flexibility and adaptability of the device.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A debris-proof device for a dredging head of a suction hopper dredger, comprising a cover (1), a booster pump (14) installed on the top of the cover (1), a grid (4) fixedly connected to one side of the inside of the cover (1), and a filter assembly provided inside the cover (1); Its features are: The filter assembly includes a baffle (3), and a rotating shaft (2) is symmetrically rotatably connected to the inside of the cover (1) away from the grid (4), and the baffle (3) is fixedly connected to the inner side of the two rotating shafts (2) at equal distances. A flushing frame (5) is symmetrically fixedly connected inside the cover (1) on the side close to the grid (4), and a brush plate (6) that cooperates with the grid (4) is slidably connected inside the cover (1) on the side away from the flushing frame (5).

2. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 1, characterized in that: One end of each of the two rotating shafts (2) extends to the outside of the cover (1) and is fixedly connected to a rotating plate (7). The inner side of each of the two rotating plates (7) is provided with a sliding groove. The outer side of the cover (1) is symmetrically connected to an electric push rod (8) by a mounting block. The output end of each of the two electric push rods (8) is fixedly connected to a sliding shaft (9). The two sliding shafts (9) are respectively slidably connected to the inside of the corresponding rotating plate (7) through the sliding groove.

3. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 2, characterized in that: A reciprocating screw (10) is rotatably connected to one side of the inside of the cover (1). The brush plate (6) is connected to the outside of the reciprocating screw (10) through a screw nut pair. One end of the reciprocating screw (10) extends to the top of the cover (1) and is fixedly connected to a worm gear (11). A worm (12) is rotatably connected to one side of the top of the cover (1) through a limiting frame. A blade (13) is symmetrically fixedly connected to the outside of the worm (12). The worm gear (11) and the worm (12) are coupled together.

4. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 3, characterized in that: The booster pump (14) has a drainage plate (15) fixedly connected to the outside side, which cooperates with the blade (13). Water pipes (16) are fixedly connected to both sides of the drainage plate (15). One end of each water pipe (16) extends into the inside of the cover (1) and is fixedly connected to the corresponding flushing frame (5).

5. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 4, characterized in that: The two sets of baffles (3) are staggered, and the inner sides of the two flushing frames (5) are fixedly connected with pressurized nozzles at equal intervals.

6. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 1, characterized in that: A movable cover (17) is installed on the outer side of the cover (1), and a rake tooth (18) is fixedly connected to the bottom of the movable cover (17). A connecting pipe (19) is fixedly connected to the outer side of the cover (1) away from the movable cover (17).

7. The debris-prevention device for the dredging head of a trailing suction hopper dredger according to claim 6, characterized in that: The top of the movable cover (17) is equidistantly fitted with a plurality of fixing bolts (20), one end of which penetrates the movable cover (17) and extends into the interior of the rake teeth (18) and is threadedly connected thereto.

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